HYMENOPTERA yg 



This species is very closely allied to the preceding, but the </ is easily distinguished 

 by the yellow base of the posterior tibiae and tarsi, and apparently is not variable in 

 this respect, as I have examined a fine series. It also has the face evidently wider 

 across the eyes than facilis. The female is much more difficult to separate, but the 

 face appears to be slightly wider, and the average size of the insect considerably less. 



Hab. Mountains of Kauai (2000 — 4000 ft.). It is also found on the coast. 



(3) Nesoprosopis simplex, sp. nov. 



Praecedentibus simillima ; c/" tibiis posticis haud flavo-notatis ; genitalium stipitibus 

 minus productis, et usque ad apices longe ciliatis, distinctus. (/?. Long. 6 — 9 mm. 

 (Plate II. fig. 9.) 



In general appearance and puncturation very like the two preceding species ; the 

 <r may be known at once from N. chlorosticta by the entirely dark posterior tibiae, 

 and from either by the genital armature, the stipites of which are less produced, and 

 fringed right up to the apex with long hairs. The plate above the clypeus is very variable 

 in its proportions, the length of its lateral margin being sometimes longer, sometimes 

 equal to, or even shorter than its anterior margin. I see no character to separate the 

 ? from that of facilis ; the wings are strongly and entirely infuscate with evident blue 

 iridescence, wherein they especially resemble examples of that insect, from Maui and 

 Molokai, although their average size is less. 



Hab. Island of Hawaii, generally distributed from 1500 — ■4000 ft. elevation, 

 and abundant. 



(4) Nesoprosopis hirsuiula, sp. nov. 



Praecedentibus cognata, sed capite latissimo, latiore quam longiore ; (/ tibiis basi 

 longe flavescentibus, tarsis haud maculatis ; segmento ventrali 8° apice haud longe 

 bifurcate, bene distinctus. c/?. Long. 6 — 9mm. (Plate II. fig. 10 — 10^.) 



Male with the face very broad, transverse, the scape of the antennae slightly 

 dilated, not quite so much as in N. facilis, &c., nor quite so strongly arched beneath : 

 the clypeus, a small spot on either side of it, and the plate above it, pale yellowish- 

 white. The latter two markings are variable, sometimes absent. The plate above 

 the clypeus is very wide ; cheek between the eye and mandible extremely short ; 

 clypeus clothed with rather long erect hairs, generally of an obscure colour ; head 

 above the antennae with long, dark pubescence, and roughly punctured. Thorax 

 with rather long obscure pubescence ; puncturation very like that oi facilis, sometimes 

 perhaps rather stronger ; posterior tibiae white at the base, but the tarsi dark ; eighth 

 ventral segment of the abdomen with the process without long apical bifurcations. 



